http://wiki.pocketheaven.com/Flash2Advance could help somewhat. The official site is dead, but you can look it up on archive.org to find older versions of the pages, which may give you some help.
You'd probably be best off figuring out how to use Pogoshell, as I've heard the F2A's built-in save support is horrible. Unfortunately, all official Pogoshell sites are now also offline, though I believe I have a copy of the latest official version if you're interested. The unofficial versions by Kuwanger are also worth a look, as they improve on many aspects of Pogoshell (such as removing the 32-files-per-folder limit, among other things).
Good luck with your search. I have a Flash2Advance Ultra, but the two carts function almost entirely differently, so I don't know much about the original F2A carts.
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